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TI-2026-73821 Aliases CVE-2026-104764GHSA-g9fm-v4gr-h48h

Post Export Import with Media: Authenticated PHP Object Injection

Priority LOW 35CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-502.

Summary

The Post Export Import with Media plugin for WordPress, in all versions up to and including 1.17.1, is vulnerable to PHP Object Injection through deserialization of untrusted input (CWE-502). Authenticated attackers with Administrator-level access or higher can inject a PHP object. No known POP chain exists in the plugin, so the flaw has no impact unless another installed plugin or theme provides a POP chain. With such a chain, an attacker could delete arbitrary files, retrieve sensitive data, or execute code.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

The Post Export Import with Media plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.17.1 via deserialization of untrusted input . This makes it possible for authenticated attackers, with administrator-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00625 50th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
wpazleenPost Export Import with Mediaup to 1.17.1—No fix listedCNA
  • Post Export Import with Media Vendorwpazleen Affected up to 1.17.1 Fixed in — No fix listed CNA

Remediation

No fix is listed for this plugin. Remove Post Export Import with Media version 1.17.1 or earlier, or restrict administrator access to trusted users, and review installed plugins and themes for POP chains.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

  1. 2026-10-14 Threatist record created from CVE-2026-104764
  2. 2026-10-14 Alias added: GHSA-g9fm-v4gr-h48h
  3. 2026-10-14 Priority changed: MEDIUM → LOW
  4. 2026-10-16 CISA SSVC decision points changed
  5. 2026-10-21 EPSS moved to the 50th–90th percentile
  6. 2026-10-25 EPSS moved to the below the 50th percentile
  7. 2026-10-31 EPSS moved to the 50th–90th percentile
  8. 2026-11-01 EPSS moved to the below the 50th percentile
  9. 2026-11-03 EPSS moved to the 50th–90th percentile

References

Other 7

  • TI-2026-83523 Arbitrary file upload in SimpleForm WordPress plugin CVSS 3.1CRITICAL 9.8
  • TI-2026-73817 SimpleForm Unauthenticated Privilege Escalation via wp_capabilities CVSS 3.1CRITICAL 9.8
  • TI-2026-11366 Unrestricted file upload in wpazleen Post Export Import with Media CVSS 3.1HIGH 7.2
  • TI-2026-76039 Path traversal in Post Export Import with Media WordPress plugin CVSS 3.1MEDIUM 4.9
  • TI-2026-70261 Path traversal in Post Export Import with Media allows file reads CVSS 3.1MEDIUM 4.9

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences